those are just two of the provisions of the bill put forward by the united states senator whose own hands were bloodied by one of the most famous shooting acts in california history. cnn's chief correspondent, dana bash, was at the emotional announcement on capitol hill. >> reporter: wolf, with all the gun control measures that president obama provided this one, this assault-style ban is one of the toughest to get through congress. her determination comes from a very public tragedy four decades ago. for diane feinstein, it is personal. >> well, i became mayor as a product of assassination. both mayor masconey and supervisor have been shot and killed. >> reporter: the death of her colleagues, including harvey milk, the first openly gay public official was so traumatic she rarely discussed it. >> we're somebody that was very close to a tragic shooting. >> reporter: but here, in the launch to push the assault weapons ban, she talked about it in graphic detail. >> i was the one that found supervisor milk's body, and i was the one trying to get a pulse. once you have been through one of these